Display device for visualizing contents as the display is rotated and control method thereof

ABSTRACT

A display device and a controlling method thereof are provided. The display device includes: displaying a plurality of objects on a rotatable display of the display device; based on an event occurring, rotating the rotatable display in a first direction; and based on the rotatable display being rotated in the first direction, rotating and displaying constituent elements included in the plurality of objects in a second direction, which is opposite to the first direction, while maintaining an arrangement of the plurality of objects.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a Continuation-In-Part application of U.S. application Ser. No.16/100,932 filed on Aug. 10, 2018, which is based on and claims priorityunder 35 U.S.C. § 119 to U.S. Provisional Application No. 62/544,215,filed on Aug. 11, 2017, and U.S. Provisional Application No. 62/544,300,filed on Aug. 11, 2017, in the United States Patent and TrademarkOffice, and Korean Patent Application No. 10-2017-0170736, filed on Dec.12, 2017, in the Korean Intellectual Property Office, the disclosures ofwhich are incorporated herein by reference in their entireties.

BACKGROUND Field

The disclosure relates to a display device and a controlling methodthereof, and more particularly, to a display device providing a userwith a viewing experience where a user's eye gaze is focused bymaintaining a direction of displaying contents even when a display isrotated, and a controlling method thereof.

Description of Related Art

A display device typically has a rectangular shape where a horizontallength and a vertical length are different from each other. However,recently, horizontally or vertically elongated contents are provided.

Therefore, in a related art display device, a user must rotate a displayto view a horizontal content image on a vertically oriented displaydevice or a vertical content image on a horizontally oriented displaydevice.

In this regard, a user cannot maintain a focused gaze with respect to acontent because the content and display rotate together. Therefore, auser cannot continuously view the image of the content.

Therefore, a method is needed for providing a displayed image whilemaintaining focus of a user's gaze.

SUMMARY

Provided are a display device and a controlling method thereof whichprovide a user with a viewing experience where a user's gaze is focusedbecause an orientation of displayed contents is fixed while the displayis rotated.

In accordance with an aspect of the disclosure, there is provided methodof controlling a display device including a rotatable display, themethod including: displaying a plurality of objects on the rotatabledisplay; based on an event occurring, rotating the rotatable display ina first direction; and based on the rotatable display being rotated inthe first direction, rotating and displaying constituent elementsincluded in the plurality of objects in a second direction, which isopposite to the first direction, while maintaining an arrangement of theplurality of objects.

The displaying may include, based on the rotatable display being rotatedin the first direction, rotating and displaying at least a part of theconstituent elements respectively included in the plurality of objectsin the second direction at a same speed as a rotation speed of therotatable display.

The displaying may include, based on the rotatable display being rotatedin the first direction, fading out the constituent elements respectivelyincluded in the plurality of objects, and fading in a new constituentelement to at least one object of the plurality of objects.

The displaying may include, based on the event occurring while at leastone object of the plurality of objects is highlighted, rotating therotatable display in the first direction by a predetermined angle whilemaintaining the at least one object of the plurality of objects to behighlighted.

The displaying may include: based on an object of the plurality ofobjects being selected, displaying a first screen with respect to aselected object; based on the event occurring while the first screen isdisplayed, rotating the rotatable display in the first direction by apredetermined angle; and based on the rotatable display being rotated inthe first direction, fading out the first screen and fading in a secondscreen with respect to the selected object.

The displaying may include fading out display of the first screen whilerotating in the second direction, and fading in display of the secondscreen while rotating in the second direction.

The method may further include: based on an object of the plurality ofobjects being selected, displaying a first screen with respect to theselected object; based on the event occurring while the first screen isdisplayed, rotating the rotatable display in the first direction by apredetermined angle; and based on the rotatable display being rotated inthe first direction, rotating the first screen in the second direction,removing a part of the first screen, and adding a new area to the firstscreen.

The method may further include, based on the selected object being amusic related content, outputting a music source related to the musicrelated content, wherein one of the first screen and the second screenincludes at least one of an album cover, an artist picture and lyricsassociated with the music related content, and wherein another one ofthe first screen and the second screen includes an image contentassociated with the music related content.

The method may further include, based on a user input not being sensedduring a predetermined period of time while the plurality of objects arerotated and displayed in the first direction, rotating the rotatabledisplay in the second direction, and changing a mode of the displaydevice to a sleep mode.

The rotating may include rotating the rotatable display 90 degrees.

In accordance with an aspect of the disclosure, there is provideddisplay device including: a rotatable display; a rotation controller;and a processor configured to: control the rotatable display to displaya plurality of objects, based on an event occurring, control therotation controller to rotate the rotatable display in a firstdirection, and based on the rotatable display being rotated in the firstdirection, control the rotatable display to rotate and displayconstituent elements included in the plurality of objects in a seconddirection, which is opposite to the first direction, while maintainingan arrangement of the plurality of objects.

The processor may be further configured to, based on the rotatabledisplay being rotated in the first direction, control the rotatabledisplay to rotate and display at least a part of the constituentelements respectively included in the plurality of objects in the seconddirection at a speed same as a rotation speed of the rotatable display.

The processor may be further configured to, based on the display beingrotated in the first direction, control the rotatable display to fadeout display of a part of the constituent elements respectively includedin the plurality of objects, and fade in display of a new constituentelement to at least one object of the plurality of objects.

The processor may be further configured to, based on the event occurringwhile at least one object of the plurality of objects is highlighted,control the rotation controller to rotate the rotatable display in thefirst direction by a predetermined angle while maintaining the at leastone object of the plurality of objects to be highlighted.

The processor may be further configured to, based on an object of theplurality of objects being selected, control the rotatable display todisplay a first screen with respect to the selected object, based on theevent occurring while the first screen is displayed, control therotation controller to rotate the display in the first direction by apredetermined angle, and based on the rotatable display being rotated inthe first direction, control the rotatable display to fade out displayof the first screen and fade in display of a second screen with respectto the selected object.

In accordance with an aspect of the disclosure, there is provided anon-transitory computer readable recording medium having embodiedthereon a program, which when executed by a processor of a displaydevice including a rotatable display, causes the display device toexecute a method including: displaying a plurality of objects on therotatable display; based on an event occurring, rotating the rotatabledisplay in a first direction; and based on the rotatable display beingrotated in the first direction, rotating and displaying constituentelements included in the plurality of objects in a second direction,which is opposite to the first direction, while maintaining anarrangement of the plurality of objects.

The displaying may include, based on the rotatable display being rotatedin the first direction, rotating and displaying at least a part of theconstituent elements respectively included in the plurality of objectsin the second direction at a same speed as a rotation speed of therotatable display.

The displaying may include, based on the rotatable display being rotatedin the first direction, fading out the constituent elements respectivelyincluded in the plurality of objects, and fading in a new constituentelement to at least one object of the plurality of objects.

The displaying may include, based on the event occurring while at leastone object of the plurality of objects is highlighted, rotating therotatable display in the first direction by a predetermined angle whilemaintaining the at least one object of the plurality of objects to behighlighted.

The displaying may include: based on an object of the plurality ofobjects being selected, displaying a first screen with respect to aselected object; based on the event occurring while the first screen isdisplayed, rotating the rotatable display in the first direction by apredetermined angle; and based on the rotatable display being rotated inthe first direction, fading out the first screen and fading in a secondscreen with respect to the selected object.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certainembodiments of the present disclosure will be more apparent from thefollowing description taken in conjunction with the accompanyingdrawings, in which:

FIG. 1 is a view provided to explain a display system according to anembodiment;

FIG. 2 is a view illustrating that a vertically-oriented display isrotated in a horizontal direction according to an embodiment;

FIG. 3 is a block diagram illustrating configuration of a display deviceaccording to an embodiment;

FIG. 4 is a detailed block diagram illustrating configuration of adisplay device according to another embodiment;

FIG. 5 is a view provided to explain a method for displaying contentswhere a plurality of constituent elements in a plurality of objects areprocessed and rotated in different manners according to an embodiment;

FIG. 6 is a view provided to explain a method for displaying contentswhere a specific object among a plurality of objects is processed androtated in a different manner according to an embodiment;

FIG. 7 is a view provided to explain a method for displaying contents ofchanging a displayed screen while rotating a display of a display deviceaccording to an embodiment;

FIG. 8 is a view illustrating a method for displaying contents which areplayable both in a horizontal direction and in a vertical direction of adisplay device according to an embodiment;

FIG. 9 is a view illustrating a method for displaying contents optimizedfor a specific format of a display device according to an embodiment;

FIG. 10 is a view illustrating automatic rotation of a display based oncontent settings according to an embodiment;

FIG. 11 is a view illustrating an example embodiment in which a displayis not automatically rotated based on display device settings accordingto an embodiment;

FIG. 12 is a view illustrating a case where an object displayed on adisplay is a music related content according to an embodiment;

FIG. 13 is a view illustrating displaying of objects related to a musicrelated content in order of priority according to an embodiment;

FIG. 14 is a view illustrating a case where an object displayed by adisplay device is a music-related content and a lyric content related tomusic is displayed according to an embodiment;

FIG. 15 is a view illustrating a case of changing a music content to animage content while playing a music track when an object displayed by adisplay device is a music related content according to an embodiment;

FIG. 16 is a view provided to explain a case where a display device isin a sleep/power-off mode according to an embodiment;

FIG. 17 is a view illustrating an overall operation of a display deviceaccording to an embodiment; and

FIG. 18 is a flowchart provided to explain an embodiment.

DETAILED DESCRIPTION

Hereinafter, embodiments will be described in detail with reference tothe drawings. In the following description, known configurations may beomitted. In addition, the following embodiments may be modified intovarious other forms, and the scope of the technical spirit of thepresent disclosure is not limited to the following examples. Rather,these embodiments are provided so that the present disclosure will bemore thorough and complete, and will fully convey the scope of thetechnical spirit of the present disclosure to those skilled in the art.

It is to be understood that the disclosure herein is not intended tolimit the scope to the described embodiments, but includes variousmodifications, equivalents, and/or alternatives of the embodiments. Inthe description of the drawings, like reference numerals refer to likeelements throughout the description of drawings.

According to the present disclosure, the expressions “include,”“comprise,” “including,” and “comprising” indicate that one or morecomponents, steps, operations, and elements exist or are added, and donot exclude the presence of additional features.

In the present disclosure, the expressions “A or B,” “at least one of Aand/or B,” or “one or more of A and/or B,” and the like include allpossible combinations of the listed items. For example, “A or B,” “atleast one of A and B,” or “at least one of A or B” refers to (1)includes at least one A, (2) includes at least one B or (3) includes atleast one A and at least one B.

Terms such as “first” and “second” may be used to modify variouselements regardless of order and/or importance. Those terms are onlyused for the purpose of differentiating a component from othercomponents.

When an element (e.g., a first constituent element) is referred to asbeing “operatively or communicatively coupled to” or “connected to”another element (e.g., a second constituent element), it should beunderstood that each constituent element is directly connected orindirectly connected via another constituent element (e.g., a thirdconstituent element). However, when an element (e.g., a firstconstituent element) is referred to as being “directly coupled to” or“directly connected to” another element (e.g., a second constituentelement), it should be understood that there is no other constituentelement (e.g., a third constituent element) interposed therebetween.

The expression “configured to” as used in the present disclosure canrefer to, for example, “suitable for,” “having the capacity to,”“designed to,” “adapted to,” “made to,” or “capable of” depending on thesituation. The term “configured to (or set to)” may not necessarily mean“specifically designed to” in hardware. Instead, in some circumstances,the expression “a device configured to” may mean that the device “isable to˜” with other devices or components. For example, “asub-processor configured to (or set to) execute A, B, and C” may beimplemented as a processor dedicated to performing the operation (e.g.,an embedded processor), or a generic-purpose processor (e.g., a centralprocessor unit (CPU) or an application processor) that can perform thecorresponding operations.

Hereinafter, the present disclosure will be described in detail withreference to the accompanying drawings.

Embodiments will be described in detail with reference to theaccompanying drawings so that those skilled in the art can easily embodythe present disclosure. The present disclosure may, however, be embodiedin many different forms and should not be construed as limited to theembodiments set forth herein. In order to clearly illustrate the presentdisclosure, parts not related to the description are omitted, and likeelements are denoted by like reference numerals throughout thespecification.

FIG. 1 is a view provided to explain a display system according to anembodiment. Referring to FIG. 1, a display system according to anembodiment may include a display device 200, a remote control device 100and a mobile device 300.

The display device 200 may be embodied as a digital television (TV) asshown in FIG. 1, but the present disclosure is not limited thereto. Thedisplay device 200 may be embodied as various types of display deviceshaving a display function such as an audio, a speaker, a monitor, aprojection TV, etc. which include a display. When the display device 200is embodied as a digital TV, the display device 200 may be controlled bythe remote control device 100. The remote control device 100 may be adevice for remotely controlling the display device 200, and may receivea user interaction and transmit a control signal corresponding to aninput user interaction to the display device 200. For example, theremote control device 100 may sense a motion of the remote controldevice 100 and transmit a signal corresponding thereto, recognize avoice and transmit a signal corresponding to the recognized voice, ortransmit a signal corresponding to an input key.

The display device 200 may be operable in association with the mobiledevice 300. For example, the display device 200 may receive a specificcontent or a control command from the mobile device 300. The displaydevice 200 may provide a mirroring function, which means simultaneouslydisplaying the content displayed by the mobile device 300. Here, themirroring function may be a function that an image displayed on themobile device 300 is transmitted to the display device 200 on a realtime basis, and the display device 200 displays an image displayed inthe mobile device 300 simultaneously. The image displayed on the mobiledevice 300 may be identical with the image displayed on the displaydevice 200, but this is merely exemplary, and at least a portion of theimage displayed on the mobile device 300 may be displayed on the displaydevice 200. For example, when the mobile device 300 simultaneouslydisplays the content and the UI, the mobile device 300 may transmit onlyinformation on the content to the display device 200, and the displaydevice 200 may display only the content displayed on the mobile device300.

When a predetermined event occurs, as shown in FIG. 1, the displaydevice 200 may rotate a rectangular-shaped display whose horizontallength is greater than a vertical length (hereinafter, referred to as “ahorizontally oriented display”) to be rectangular-shaped display whosevertical length is greater than a horizontal length (hereinafter,referred to as “a vertically oriented display”). In the similar manner,a display may be rotated so that a rectangular display whose verticallength is greater than a horizontal length is to be a display whosehorizontal length is greater than a vertical length. When apredetermined event occurs while a screen including a plurality ofobjects is displayed on a vertically oriented display, the displaydevice 200 may rotate a display to be disposed in a horizontal directionthrough a rotation controller, and rotate constituent elements includedin a plurality of objects in a reverse direction while the display isrotated, thereby providing an effect of fixing a user's gaze withrespect to constituent elements separately from a plurality of objects.Here, the horizontally oriented display indicates a state that thehorizontal length of the display is longer than the vertical lengthbased on the ground, and may be referred to as so-called a horizontalmode or a landscape mode. The vertically oriented display indicates astate that the vertical length of the display is longer than thehorizontal length based on the ground, and may be referred to asso-called a vertical mode or a portrait mode.

FIG. 2 is a view illustrating that a vertically-oriented display isrotated in a horizontal direction according to an embodiment.

Referring to FIG. 2, the display device 200 may display a plurality ofobjects 231-1, 231-2, 231-3, and 231-n on the display 230 in apredetermined arrangement. When a predetermined event occurs, thedisplay device 200 may rotate the display 230 in a first direction 3000by a predetermined angle. As the display 230 rotates in the firstdirection, the display device 200 may rotate first constituent elements232-1, 232-2, 232-3, . . . , and 232-n included in a plurality ofobjects in a direction different from the first direction whilemaintaining the arrangement of the plurality of objects 231-1, 231-2,231-3, . . . , and 231-n. The direction different from the firstdirection 3000 may be a second direction 3100 which is a reversedirection to the first direction 3000.

The predetermined angle may be 90 degrees, but the present disclosure isnot limited thereto. FIG. 2 illustrates that the display device 200 mayrotate the display 230 in the first direction 3000 by 90 degrees, androtate the first constituent elements 232-1, 232-2, 232-3, . . . , 232-nincluded in a plurality of objects in the second direction 3100 which isa reverse direction to the first direction while maintaining thearrangement of the plurality of objects 231-1, 231-2, 231-3, . . . ,231-n.

The first constituent elements 232-1, 232-2, 232-3, . . . , 232-ncorresponding to the plurality of objects 231-1, 231-2, 231-3, . . . ,231-n may be rotated in the second direction 3100 at the same speed atwhich the display 230 rotates in the first direction 3000. That is, asthe first constituent elements 232-1, 232-2, 232-3, . . . , 232-n andthe display 230 rotate in opposite directions at the same speed. Thus,as viewed from a user, the first constituent elements 232-1, 232-2, . .. , 232-n may be kept fixed without being rotated. In this case, thearrangement of the plurality of objects 231-1, 231-2, 231-3, . . . ,231-n on the display 230 may be maintained and rotated.

FIG. 3 is a block diagram to explain configuration of a display deviceaccording to an embodiment. Various embodiments will be described withreference to a block diagram illustrating detailed configuration of thedisplay device 200 of FIG. 3.

Referring to FIG. 3, a display device 200 may include a display 230, arotation controller 235 and a processor 290.

The display 230 may output externally received or pre-stored image dataor user interface (UI) under the control of the processor 190 or UI. Thedisplay 230 may be disposed in a horizontal direction or in a verticaldirection under the control of the processor 290.

When a predetermined event occurs while the display 230 is disposed in avertical direction, the display 230 may be rotated by the rotationcontroller 235 and disposed in a horizontal direction. When the display230 in a vertical direction is rotated in a first direction whiledisplaying a plurality of objects, the display 230 may rotate anddisplay constituent elements included in a plurality of objects on adisplay screen in a second direction, which is a reverse direction tothe first direction, and accordingly, display the constituent elementsin a plurality of objects in a fixed direction separately from aplurality of objects even when the display is rotated.

The rotation controller 235 may rotate the display 230 under the controlof the processor 290. According to an embodiment, the rotationcontroller 235 may include a motor configured to control rotation of thedisplay 230. When a predetermined event occurs, the rotation controller235 may rotate the display 230 in the vertical direction by 90 degreesso that the display 230 in the vertical direction is to be disposed inthe horizontal direction.

The processor 290 may control the overall operation of the displaydevice 200. When a predetermined event occurs while the display 230displays a first image, the processor 290 may control the rotationcontroller 235 to rotate the display 230 by a predetermined angle. Thepredetermined event may be an event where a user directly inputs a userinteraction, or an event where the display device 200 senses apredetermined condition without a user input. Examples of a userdirectly inputting a user interaction may include an event where apredetermined user interaction is detected in a predetermined area of aremote controller, an event where a predetermined button of a remotecontroller is selected, an event where a predetermined user motion (forexample, a hand-shaking motion) is photographed by a camera, an eventwhere a predetermined user voice (for example “turn the screen”, or thelike) is input by a microphone, an event where a predetermined usertouch is input to a touch detector provided on a bezel of the display230, and the like. Examples of the event where the display device 200detects a predetermined condition without a user input may include anevent where contents in a specific condition is displayed on the mobiledevice 300 when a mirroring function is performed, an event where aspecific game is executed, an event where a user motion is detected whena specific mode (e.g., a sleep mode) is operated, and an event where anexternal device (e.g., an electronic piano, etc.) is connected.

The processor 290 may control the rotation controller 235 and thedisplay 230 to display constituent elements included in a plurality ofobjects by rotating in the second direction while maintaining thearrangement of the objects displayed on the display 230 when rotatingthe display 230 in the first direction. The processor 290 may fade outor fade in a part of the constituent elements included in the pluralityof objects by rotating the display 230. The processor 290 may controlthe rotation controller 235 and the display 230 so that one of theplurality of objects may be highlighted.

The processor 290 may rotate the display 230 so that a part of the firstscreen before rotating may be faded out and a second screen including anew area may be displayed. The processor 290 may reduce the size of theobject by rotating the display 230 and display the object of areduced-size on the rotated display.

When changing the object displayed on the display 230 and rotating thedisplay 230, the processor 290 may control the rotation controller 235and the display 230 so that the object before changing may be faded outand the object after changing may be faded in.

The processor 290 may automatically rotate the display 230 as a contentis changed, and control the rotation controller 235 and the display 230to allow the display to automatically rotate according to a predefinedrule in one content. When reproducing a music related content, theprocessor 290 may control the rotation controller 235 and the display230 so that the display 230 automatically may rotate as the musicrelated content is changed to an image content in the case where thereproduced object is a lyric related content. The processor 290 maycontrol the rotation controller 235 and the display 230 so that adisplay automatically rotates according to rules of the content, such asan hourglass that flips when a certain amount of sand falls off.

When the reproduced object is a music related content, the processor 290may control a speaker 240 to output a music track related to thecontent. The processor 290 may control the display 230 to display atleast one of an album cover, artist photographs, lyrics, image contents(e.g., a music video, a teaser image, etc.) associated with the musicrelated content.

When outputting a music track with reproducing the music-relatedcontent, the processor 290 may further control the display 230 todisplay pictures or images in order of relevance to the music track. Theprocessor 290 may also control the display 230 to select and display alyric design that matches the mood of the music track.

The processor 290 may reproduce a music video while displaying the musicrelated content (e.g., lyrics, album cover, etc.) and outputting themusic track. In this case, the processor 290 may control the display 230and the rotation controller 235 so that an image content is reproduceand displayed by rotating a display. The processor 290 may control thespeaker 240 to reproduce an image content music source having a waveformsimilar to that of the music content music source to synchronize themusic content sound source with the image content sound source.

The processor 290 may change a mode of the display device 200 to a sleepmode when a user command is not input for a predetermined period oftime. In order for the display device 200 to enter a sleep mode, theprocessor 290 may control the rotation controller 235 to allow thedisplay 230 to be disposed in a vertical direction. The processor 290may control the rotation controller 235 so that the display 230 isdisposed in a vertical direction even when a power off command isreceived.

FIG. 4 is a detailed block diagram illustrating configuration of adisplay device according to another embodiment. Referring to FIG. 4, adisplay device 200 according to an embodiment may include a contentsreceiver 210, a communicator 220, a display 230, a rotation controller235, a speaker 240, a memory 250, an audio processor 260, a videoprocessor 270, a user interface 280 and a processor 290.

The contents receiver 210 may receive contents data through varioussources. For example, the contents receiver 210 may receive content datafrom an external server or external devices (e.g., an electronic piano,an electronic Musical Instrument Digital Interface (MIDI), a digitalversatile disc (DVD) player, a Universal Serial Bus (USB), etc.), etc.,or content data stored in the memory 250. The contents receiver 210 mayinclude a plurality of content receiving modules for displaying aplurality of objects on one display screen. For example, the contentsreceiver 210 may include a plurality of tuners for simultaneouslydisplaying a plurality of objects.

The communicator 220 may be a transceiver (transmitter and receiver)configured to perform communication with various types of externaldevices or external servers according to various types of communicationmethods. The communicator 220 may include various communication chipssuch as a Wi-Fi chip, a Bluetooth chip, a near-field communication (NFC)chip, and a wireless communication chip. The Wi-Fi chip, the Bluetoothchip, and the NFC chip may communicate with each other using a Wi-Fimethod, a Bluetooth method, and an NFC method. The NFC chip may refer toa chip operating in an NFC system using a band of 13.56 MHz amongvarious radio-frequency identification (RFID) frequency bands such as135 kHz, 13.56 MHz, 433 MHz, 860 to 960 MHz and 2.45 GHz. When a Wi-Fichip or a Bluetooth chip is used, various connection information such asa service set identifier (SSID) and a session key may be transmitted andreceived first, and communication information may be used to transmitand receive various information.

The wireless communication chip may refer to a chip that performscommunication according to various communication standards such as IEEE,ZigBee, 3rd Generation (3G), 3rd Generation Partnership Project (3GPP),Long Term Evolution (LTE), etc. When content data is received from anexternal server through the communicator 220, the communicator 220 maybe implemented as the contents receiver 210.

The display 230 may display at least one of a video frame where contentsdata the contents receiver 210 receives is processed by a videoprocessor 270 and various screens generated by a graphics processor 293.The display 230 may be rotated by the rotation controller 235.Specifically, the display 230 in the vertical direction may be rotated90 degrees by the rotation controller 235 and positioned in thehorizontal direction. In addition, when the display 230 in the verticaldirection is rotated in the first direction while displaying a pluralityof objects, the display 230 in the vertical direction may rotate anddisplay an object included in the plurality of objects in the seconddirection, which is a reverse direction to the first direction.

The display 230 may include a liquid crystal display (LCD) panel, anorganic light emitting diode (OLED) display panel, or the like, but thepresent disclosure is not limited thereto. In addition, the display 230may be embodied with a flexible display, a transparent display, or thelike.

According to an embodiment, the display 230 may include not also adisplay panel outputting an image but also a bezel housing a displaypanel. The bezel according to an embodiment may include a touch detectorfor detecting a user interaction.

The rotation controller 235 may rotate the display 230 under the controlof the processor 290. When a predetermined event occurs, the rotationcontroller 235 may rotate the display 230 in the vertical direction by90 degrees to be disposed in the horizontal direction.

The rotation controller 235 may rotate the display 230 according to adirection of a user interaction. For example, when a clockwise userinteraction is input, the rotation controller 235 may rotate the display230 in a clockwise direction.

According to an embodiment, the rotation controller 235 may rotate thedisplay 230 by using a motor, but the present disclosure is not limitedthereto. The rotation controller 235 may rotate the display 230 by usinganother constituent element (e.g., a chain, etc.).

The speaker 240 may output various alarming sounds and voice messages inaddition to various audio data processed by the audio processor 260.When the content displayed on the display 230 is a music-relatedcontent, the speaker 240 may output a music track of the reproducingcontent.

The memory 250 may store various modules for driving the display device200.

The audio processor 260 may be a constituent element for processingaudio data. Various processing such as decoding, amplification, noisefiltering, etc., with respect to audio data may be performed by theaudio processor 260. The audio processor 260 may include a plurality ofaudio processing modules for processing audio data corresponding to aplurality of contents.

The video processor 270 may be a constituent element for processingcontents data received from the contents receiver 210. The videoprocessor 270 may perform various image processing such as decoding,scaling, noise filtering, frame rate conversion, resolution conversion,etc. The video processor 270 may include a plurality of video processingmodules for processing video data corresponding to a plurality ofcontents.

The video processor 270 may process an image so that the size of thepreviously displayed image may be reduced in a horizontal directionduring the rotation of the display 230.

The user interface 280 may detect a user interaction for controlling theoverall operation of the display device 200. Referring to FIG. 4, theuser interface 280 may include various interaction detection devicessuch as a camera 281, a microphone 282, a remote control signal receiver283, etc.

The camera 281 may detect a motion of a user controlling the displaydevice 200. The camera 281 may detect various user motions forcontrolling the display device 200. The camera 281 may receive a usermotion for rotating the display device 200. For example, as a usermotion to rotate the display device 200, a motion to shape hands severaltimes, a motion to draw a circle, or the like may be included.

The microphone 282 may receive user voices or other sounds and changethe user voices or other sounds into audio data. In this case, themicrophone 282 may receive various user voices for controlling thedisplay device 200, and in particular, the microphone 282 may receive auser voice for rotating the display device 200. For example, as a uservoice to rotate the display device 200, “turn the screen,” “rotate thescreen,” or the like, may be included.

The processor 290 may receive a user voice command input through themicrophone 282, change the user voice command into audio data and storeit in the memory 250. When the camera 281 and the microphone 282 areprovided, the processor 290 may perform a control operation according toa user voice input through the microphone 282 or a user motionrecognized by the camera 281. In other words, the display device 200 mayoperate in a motion control mode or in a voice control mode. When thedisplay device 200 is operated in a motion control mode, the processor290 may activate the camera 221 and detect a user, trace a motion changeof the user and perform a control operation corresponding thereto. Whenthe display device 200 is operated in a voice control mode, theprocessor 290 may analyze a user voice input through the microphone, andthe display device may operate in a voice recognition mode forperforming a control operation according to the analyzed user voice. Inaddition, a remote control signal receiver 283 may receive a remotecontroller signal including a control command from a remote controlleras a remote control device 100. The remote control device 100 may be anexternal remote control device. The user interface 280 may receive auser interaction for rotating the display 230.

The processor 290 may control the overall operation of the displaydevice 200 by using various programs stored in the memory 250.

Referring to FIG. 4, the processor 290 may include a random-accessmemory (RAM) 291, a read-only memory (ROM) 292, a graphics processor293, a main CPU 294, first to n interfaces 295-1 to 295-n, and a bus136. The RAM 291, the ROM 292, the graphics processor 293, the main CPU294, the first to n interfaces 295-1 to 295-n, etc. may be connected toone another via the bus 136.

The ROM 292 may store a set of one or more instructions, etc. for systembooting. When a turn-on command is input and power is supplied, the mainCPU 294 may copy the operating system (O/S) stored in a memory 2100 tothe RAM 291 according to the one or more instructions stored in the ROM292, execute the O/S and perform system booting. When the booting iscompleted, the main CPU 294 may copy various application programs storedin the memory 2100 to the RAM 291, execute the application programcopied to the RAM 291, and perform various operations.

The graphics processor 293 may generate a screen including variousobjects such as icons, images, texts, etc. using a calculator (notshown) and a renderer (not shown). The calculator may calculateattribute values such as a coordinate value, a shape, a size, a color,and the like to display each object according to the layout of thescreen using the control command received from the user interface 280.The renderer may generate screens of various layouts including theobjects based on the attribute values calculated by the calculator. Thescreen generated by the renderer may be displayed in the display area ofthe display 230.

The main CPU 294 may access the memory 250 and perform booting by usingthe O/S stored in the memory 250. The main CPU 294 may perform variousoperations using various program, contents, data, etc. stored in thememory 250.

The first to nth interfaces 295-1 to 295-n may be connected to variousconstituent elements described above. One of the interfaces may be anetwork interface connected to an external device via a network.

The processor 290 may display a plurality of objects on the display 230.When a predetermined event occurs, the processor 290 may rotate thedisplay 230 in the first direction by a predetermined angle through therotation controller 235. As the display 230 rotates in the firstdirection, the processor 290 may control the display 230 so that theconstituent elements included in the plurality of objects are rotated inthe second direction, which is a reverse direction to the firstdirection while maintaining the arrangement of the plurality of objects.

Hereinafter, various example embodiments will be described withreference to FIGS. 5 to 17.

According to an embodiment, FIGS. 5 and 6 illustrate that the displaydevice 200 processes and displays a plurality of constituent elementsrespectively included in a specific object or in a plurality of objectsin different manners when a plurality of objects are rotated.

A first constituent element included in a plurality of objects may be athumbnail image displaying a content included in each object. A secondconstituent element included in a plurality of objects may be a textwith respect to a content included in each object. For example, FIG. 5is a view provided to explain a method for displaying a content where aplurality of constituent elements are processed and rotated in adifferent manner.

In the similar manner as FIG. 2, FIG. 5 illustrates the arrangement of aplurality of objects 231-1, 231-2, 231-3, and 231-n on the display 230.The plurality of objects 231-1, 231-2, 231-3, and 231-n may include thefirst constituent elements 232-1, 232-2, 232-3 and 232-n and the secondconstituent elements 233-1, 233-2, 233-3 and 233-n. As described above,each of the first constituent elements 232-1, 232-2, 232-3 and 232-n maybe a thumbnail image with respect to a content included in each of theplurality of objects 231-1, 231-2, 231-3, and 231-n. In the similarmanner, each of the second constituent elements 233-1, 233-2, 233-3 and233-n may be a text with respect to a content included in each of theplurality of objects 231-1, 231-2, 231-3, and 231-n.

In the similar manner as FIG. 2, referring to FIG. 5, when apredetermined event occurs, the display device 200 may rotate thedisplay 230 in the first direction 3000 by a predetermined angle. As thedisplay 230 rotates in the first direction, the display device 200 mayrotate the first constituent elements 232-1, 232-2, and 232-n and thesecond constituent elements 233-1, 233-2, and 233-n included in theplurality of objects in the second direction 3100, which is a reversedirection to the first direction 3000, while maintaining the arrangementof the plurality of objects 231-1, 231-2, 231-3, and 231-n.

The display 230 may display the second constituent elements 233-1,233-2, 233-3, and 233-n by fading out and fading in, unlike the firstconstituent elements 232-1, 232-2, 233-3, and 232-n which simple rotate.Referring to FIG. 5, the display 230 may fade out the second constituentelements 233-1, 233-2, 233-3, and 233-n while the second constituentelements 233-1, 233-2, . . . , and 233-n are rotated by 0 degree to 45degrees in the second direction 3100, and fade in the second constituentelements 233-1, 233-2, . . . , and 233-m while the second constituentelements 233-1, 233-2, . . . , and 233-n are rotated by 45 degrees to 90degrees.

According to the above described embodiment, the second constituentelements 233-1, 233-2, 233-3 and 233-n may rotate by being faded outwhile the first constituent elements 232-1, 232-2, . . . , and 232-n arebeing rotated, but the display device 200 may process and rotate eachconstituent element in various methods. For example, the display device200 may rotate the second constituent elements 233-1, 233-2, 233-3 and233-n in a highlighted state, or rotate them by adjusting the size basedon a predetermined rule, or rotate them so that the second constituentelements 233-1, 233-2, 233-3 and 233-n may additionally display thedetailed explanation for the first constituent elements 232-1, 232-2,232-3, and 232-n.

The display device 200 may process and rotate the first constituentelements 232-1, 232-2, 232-3 and 232-n in addition to the secondconstituent elements 233-1, 233-2, 233-3 and 233-n in various manners.

Through the above-described example, the display device 200 may providea user with an effect of maintaining the overall sense of compositionand focusing attention on a specific element, and provide various visualeffects.

According to another example embodiment, FIG. 6 is a view provided toexplain a method for displaying contents where a specific object among aplurality of objects is processed and rotated in a different manner fromanother object according to an embodiment.

Referring to FIG. 6, when a predetermined event occurs while at leastone object 231-1 among a plurality of objects 231-1, 231-2, 231-3, and231-n is highlighted, the display device 200 may rotate the display 230in the first direction 3000 by a predetermined angle. As the display 230rotates in the first direction, the display device 200 may maintain thearrangement of the specific object 231-1 and the other plurality ofobjects 231-2, 231-3, and 231-n and rotate the plurality of objects231-1, 231-2, 231-3, and 231-n while maintaining the highlight of thespecific object 231-1.

In the above embodiments, all objects have been described as rotating,but this is merely exemplary, and a part (for example, highlightedobjects) of the plurality of objects may rotate. Specifically, when apredetermined event occurs while a highlight is displayed on at leastone object (231-1 in FIG. 6) among the plurality of objects 231-1,231-2, 231-3, . . . , 231-n, the display device 200 may rotate thedisplay 230 in the first direction 3000 by a predetermined angle. As thedisplay 230 rotates in the first direction, the display device 200 maymaintain an arrangement of the highlighted object 231-1 and the rest ofthe plurality of objects 231-2, 231-3, . . . , 231-n, rotates only theconstituent elements of the highlighted object 231-1 and may not rotatethe constituent elements of the rest of the plurality of objects 231-2,231-3, . . . , 231-n. That is, by rotating only the constituent elementsof the object on which the highlight is displayed, the visibility of thehighlighted object may be improved.

According to the above described embodiment, it is described that aspecific object is highlighted and rotated, but the display device 200may rotate an object by processing in various manners. For example, thedisplay device 200 may rotate a specific object by adjusting the sizethereof, or rotate a specific object by displaying a content relatedthereto.

Through the above-described example embodiments, the display device 200may maintain the arrangement of objects without being out of user'sfocus on the specific object 231-1, thereby providing a viewingexperience where an overall sense of composition is maintained.

As described in FIGS. 2 and 5, the first constituent elements 232-1,232-2, 232-3 and 232-n and the second constituent elements 233-1, 233-2,233-3 and 233-n included in the plurality of objects may be rotated in adirection different from the first direction. The direction differentfrom the first direction 3000 may be the second direction 3100 which isa reverse direction to the first direction 3000. In the similar manner,the first constituent elements 232-1, 232-2, 232-3 and 232-n and thesecond constituent elements 233-1, 233-2, 233-3 and 233-n may rotate atthe speed same the display 230 rotates.

Referring to FIGS. 7 to 11, various example embodiments for processingcontents displayed on the display 230 related to the rotation of thedisplay 230 will be described.

FIG. 7 is a view provided to explain a method for displaying contents ofchanging a displaying screen while rotating a display of a displaydevice according to an embodiment.

FIG. 7 illustrates a process where a first screen 710 is switched to asecond screen 720 when the display device 200 rotates the display 230 ina vertical direction to be disposed in a horizontal direction. When oneof a plurality of objects 231-1, 231-2, 231-3, and 231-n in FIGS. 2, 5and 6 is selected, the display device 200 may display a first screenwith respect to the selected object.

First contents displayed on the first screen may be second contentsrelated to the contents displayed on the second screen. For example, thefirst contents on the first screen may be an album cover of musiccontents, and the second contents on the second screen may be imagecontents of the music contents (e.g., a music video).

The display device 200 may display the second contents related to thefirst contents when receiving a user input for displaying the secondcontents related to the first contents while displaying the firstscreen. The display device 200 may automatically rotate the display 230when the second contents are optimized for a horizontally orienteddisplay.

According to the settings, the display device 200 may automaticallydisplay the second content related to the first content when the firstcontent is displayed when a specific first content is displayed. Forexample, if it is set that a movie is to be displayed when a user playsa movie Official Sound Track (OST) music track, the display device 200may automatically display a movie content as the second content when themovie OST music source is selected as the first content. When the moviecontent is optimized for the horizontally oriented display, the displaydevice 200 may automatically rotate the display 230.

As described in FIGS. 2, 5 and 6, the display device 200 may rotate thedisplay 230 in the second direction 3100 by a predetermined anglethrough the rotation controller 235 when a predetermined event occurswhile the first screen 710 in a vertical direction is displayed. Thedisplay device 200 may fade out the first screen with respect to theobject, and fade in the second screen 720 with respect to the object asthe display 230 is rotated. In the similar manner, the display device200 may rotate the first screen 710 and the second screen 720 in thesecond direction 3300 which is a reverse direction to the firstdirection 3200 as the display 230 rotates in the first direction 3200.The display device 200 may equalize a speed at which the first screenand the second screen are rotated in the second direction 3300 and aspeed at which the display 230 is rotated in the first direction 3200.In addition, as the display 230 is rotated in the first direction, thedisplay device 200 may display the screens so that the first screen 710may face out while rotating in the second direction, and the secondscreen may fade in rotating in the second direction. Accordingly,although the display 230 is rotated, the display device 200 may displaythe first screen 710 and the second screen 720 in a predetermineddirection without rotating, thereby allowing a user to enjoy a viewingexperience where a user's gaze is focused.

FIG. 8 is a view provided to explain a method for displaying contentswhich are playable both in a horizontal direction and in a verticaldirection of a display device according to an embodiment.

As described above, when the display 230 is rotated in the firstdirection, the display device 200 may rotate the object displayed on thedisplay 230 in the second direction which is a reverse direction to thefirst direction. Referring to FIG. 8, the display device 200 may displayobjects playable by both a horizontally oriented display and avertically oriented display on the display 230. The display device 200may remove a partial area 810-1 of a first screen 810 and display asecond screen 820 including a new area 820-2 by rotating the display230.

The display device 200 may remove the partial area 810-1 by fading out,and display the new area 820-2 by fading in. Accordingly, a user maynaturally watch the removed area and the added area through the displaydevice 200.

As described above, as the display 230 rotates in the first direction,the display device 200 may rotate the first screen 810 and the secondscreen 820 in the second direction, which is a reverse direction to thefirst direction, thereby providing a user with an experience where auser's gaze is focused.

FIG. 9 is a view illustrating a method for displaying contents optimizedfor a specific format of a display device according to an embodiment.

As described above, when the display 230 is rotated in the firstdirection, the display device 200 may rotate the object displayed on thedisplay 230 in the second direction which is a reverse direction to thefirst direction. Referring to FIG. 9, the display device 200 may displayan object optimized to be replayed in a specific format such as ahorizontally oriented display or a vertically oriented display on thedisplay 230. As the display is rotated, the display device 200 mayreduce the size of the object on the first screen 910 and display theobject of a reduced-size on the second screen 920 of the display 230.

As the display 230 is rotated in the first direction, the display device200 may rotate the first screen 910 and the second screen 920 in thesecond direction, which is a reverse direction to the first direction,thereby providing a user with an experience where a user's gaze isfocused

FIG. 10 is a view illustrating automatic rotation of a display accordingto content settings according to an embodiment.

The display device 200 may display contents where a predetermined effectis reproduced on the display 230. Referring to FIG. 10, the displaydevice 200 may display a content that reproduces an effect where apredetermined object 1040 moves from the top to the bottom of thedisplay 230 and accumulates on the display 230 such as a first state1010. When a predetermined condition is satisfied (e.g., in the casewhere 70% of the predetermined object 1040 is stacked on the bottom ofthe display), the display device 200 may rotate the display 230 in apredetermined direction, such as a second state 1020. However, thepredetermined conditions set forth above are merely exemplary and mayinclude various conditions. The display device 200 may then continue torotate in a direction as the second state 1020 and rotate the display230 so that a lower end of the display is to be an upper end, such as athird state 1030. Thereafter, the predetermined object 1040 may movefrom the top of the display to the bottom of the display, and thecontents such as in the first state 1010 may be displayed on the display230. In the similar manner, when the predetermined condition issatisfied in the first state 1010, the display device 200 may rotate thedisplay 230.

In the above description, the display device 200 may automaticallyrotate the display 230, and the specific embodiment as shown in FIG. 10has been described. However, the present disclosure is not limitedthereto. That is, the display device 200 may automatically rotate thedisplay 230 according to the optimized height to width ratio of theobject to be reproduced on the display 230. For example, when thedisplay 230 displays an object optimized for the vertically orienteddisplay while displaying the object in the horizontal direction, thedisplay device 200 may automatically rotate the display 230 in thevertical direction.

However, the present disclosure is not limited thereto. As shown in FIG.11, according to the settings, although an object 1110 optimized for avertically oriented display is displayed, the display 230 may not beautomatically rotated. In order to rotate the display 230, the displaydevice 200 may be set for a user to manually input a rotation command. Auser may input a rotation command through a touch detector included in abezel housing the display 230, or input a rotation command though thecamera 281 using a user motion. A rotation command may be input throughthe microphone 282 by user voice, and a rotation command may be inputthrough the remote control device 100 and the mobile device 300.However, the present disclosure is not limited thereto, but a rotationcommand may be input in various types.

In the embodiment of FIG. 11, while the horizontally oriented display230 rotates to the vertically oriented display 230, the object 1110rotates as well and horizontality may be maintained. The object 1110maintains horizontality while keeping the aspect ratio, so that the sizeof the object 1110 may gradually increase, and a time point at whichrotation is completed to the vertically oriented display and a timepoint at which the size of the object 1110 increases may coincide witheach other.

FIGS. 12 to 15 illustrate various example embodiments where a specificmusic related content is selected by a user from a plurality of objectson the display 230.

Referring to FIG. 12, when a content included in the selected object isa music related content, the display device 200 may display a screenincluding at least one of an album cover related to the music, picturesrelated to music track, artist pictures, lyrics, etc. The display device200 may output a music track corresponding to a content through thespeaker 240. A user may control the display device 200 to display ascreen different from a displaying screen through a user interaction.For example, when the display device 200 receives a user interactionwhile displaying an album cover (step (a) of FIG. 12) on the display230, the display device 200 may display lyrics together with the photorelated to the music track. Similarly, when the user interaction isreceived while the display device 200 displays the content as shown instep (b) of FIG. 12, the artist picture may be displayed as shown instep (c) of FIG. 12. Step (d) of FIG. 12 shows an example in which thedisplay device 200 displays the lyric content. The user interaction maybe input through the mobile device 300 or the remote control device 100,may be a motion of the user sensed through the camera 281, or may be auser voice received through the microphone 282.

The display device 200 may display the display 230 so that one of thefirst screen and the second screen may include at least one of the albumcover, artist pictures and lyrics related to the music-related content,and the other one of the first screen and the second screen may includean image content related to the music content (e.g., a music video, ateaser image, etc.). In this case, the first screen may be a screendisplayed by a vertically oriented display and the second screen may bea screen display by a horizontally oriented display.

The display device 200 may display the music related content which isreplayed by the mobile device 300 while being linked to the mobiledevice 300 of a user, or receive and display the music related contentfrom the mobile device 300 through the contents receiver 210. Thedisplay device 200 may receive the music related content from anexternal server through the communicator 220 and display the content.

Referring to FIG. 13, the display device 200 may reproduce the contentrelated to the music source on the display 230 according to the priorityof the contents when outputting the music source corresponding to themusic related content through the speaker 240. FIG. 13 illustrates thatthe display device 200 displays the contents (artist pictures in FIG.13) according to the priority based on the relevance to the music sourceon the display 230, outputting the music source through the speaker 240.

Specifically, the display device 200 may analyze music track informationsuch as artist information, music track information, music trackannouncement timing, and the like with respect to the reproduced musictrack. Accordingly, the display device 200 may set a priority based onthe analyzed music track information. The display device 200 mayprioritize the music track based on the resolution of the pictures,whether the information is an image or a video of the performance of theartist with respect to the music track, and whether the information isan image or a video of the artist who is about to release a music track.These prioritization criteria are merely exemplary and the informationcan be prioritized on a variety of criteria and sequences.

FIG. 14 is a view illustrating a case where an object displayed by adisplay device is a music-related content and a lyric content related tothe music is displayed.

The display device 200 may analyze music track information such as musictrack genre, music track tempo, music track lyrics, and the like inassociation with a reproduced music track. Accordingly, the displaydevice 200 may select and provide the lyric design suitable for the moodof the music track among the designs pre-stored in the memory 250, basedon the analyzed music track information.

FIG. 14 illustrates an example of a lyric design provided when the genreof a music track is a dance in (a). FIG. 14 illustrates an example of alyric design provided when the tempo of the music track is a groove in(b). FIG. 14 illustrates an example of a lyric design provided when thegenre of the music track is a pop and the tempo of the music track isrelaxing in (c). The lyric design provided by the display device 200 isnot limited to the above-described example, and could be embodied asvarious forms. In addition, the display device 200 may update theadditional lyric design through the communicator 220 or the contentsreceiver 210.

FIG. 15 is a view illustrating a case of changing a music content to animage content while playing a music track when an object displayed by adisplay device is a music related content.

Referring to FIG. 15, the display device 200 may reproduce a music trackthrough the speaker 240 as shown in (a), and display the lyrics and thealbum cover associated with the music track on the display 230. In thiscase, when a user inputs a command to reproduce an image content relatedto the music track, the display device 200 may reproduce an imagecontent related to the music track as shown in (b).

When an image content is optimized for a horizontally oriented displaywhile a music source is reproduced as shown in FIG. 15, step (a), thedisplay device 200 may provide the display 230 in a rotational directionas shown in FIG. 15, step (c), by automatically rotating the display230. In this case, as shown in FIG. 7, the display device 200 may allowa user to have a focused gaze by rotating display 230 in a reversedirection to the rotational direction and provide contents by fading outand fading in.

However, although the image content is a content optimized for ahorizontally oriented display, according to the settings, the displaydevice 200 may not rotate the display 230 as shown in (b) of FIG. 15 andmay provide an image content in a reduced size.

When the display device 200 provides a screen as shown in (b) of FIG.15, and the display 230 is set to be manually rotated, a user may rotatethe display 230 by manually inputting a rotation command as shown in (c)of FIG. 15.

A user may input a rotation command through a touch detector included ina bezel housing the display 230, or input a rotation command through thecamera 281 using a user motion. A user may input a rotation commandthrough the microphone 282 by user voice, or input a rotation commandthrough the remote control device 100 and the mobile device 300.However, the present disclosure is not limited thereto, but a user mayinput a rotation command in various manners.

In this case, as described with reference to FIG. 7, a user may have afocused gaze by rotating the contents in a reverse direction to therotation direction of the display 230, and the content may be providedby fading out and fading in.

Of the image contents, in a music video, a separate screen forstorytelling may be added to an introduction part or a middle part ofthe music track. Accordingly, the music track of the music content maybe different from that of the music content music video. For example, apart corresponding to 1 minute and 50 seconds of a specific music trackmay be a part corresponding to 1 minute 58 seconds of a music video of aspecific music track. When a user inputs a music video reproducingcommand at 1 minute and 50 seconds, if the display device 200 simplyreproduces a part corresponding to 1 minute and 50 seconds of the musictrack of the music video, a user cannot enjoy the continuous viewingexperience of the music track.

Accordingly, the display device 200 may analyze a waveform of areproducing music track and a waveform of a sound source of the musicvideo, and compare the waveform similarity within a predeterminedperiod. For example, the display device 200 may analyze a fast Fouriertransform (FFT) waveform in a predetermined period where a sound sourceis being reproduced, search for a portion where a FFT waveform of thesound source of the music video coincides with a FFT waveform in apredetermined period where the sound source is reproduced, and outputthe portion as a sound source when reproducing the music video.Accordingly, even if a user changes a content to a music video content,the user can continuously watch a sound source. The above description ismerely an example, and there are various ways of comparing a soundsource with a sound source of the music video.

FIG. 16 is a view provided to explain a case where a display device isin a sleep/power-off mode.

Referring to FIG. 16, a mode of the display device 200 may be changed toa sleep mode when there is no user input for a predetermined period oftime after the display device 200 is reproduced. In the sleep mode, theconstituent elements except for the display 230, the remote controlsignal receiver 283, the communicator 220 and the processor 290 may beturned off, the display 230 may be maintained in a low quality mode, andthe processor 290 may be maintained in a low power mode. The displaydevice 200 may display weather, time, etc. in the sleep mode as shown in(a) of FIG. 16, but the present disclosure is not limited thereto. Whena mode of the display device 200 is changed to a sleep mode, the displaydevice 200 may rotate the display 230 in a horizontal direction to bedisposed in a vertical direction through the rotation controller 245.

As described above, a mode of the display device 200 may be changed tothe sleep mode when a user is not sensed for a predetermined period oftime in addition to the case where there is no user input for apredetermined period of time. The display device 200 may detect that auser is near the display device 200 through the camera 281. When it isnot detected that a user is nearby for a predetermined period of timethrough the camera 281, a mode of the display device 200 may be changedto the sleep mode.

In the sleep mode, the display device 200 may prevent unnecessary powerconsumption when a user does not use the display device 200 for a longperiod of time.

When a power-off command is received from a user, as shown in (b) ofFIG. 16, the display device 200 may change a mode to a power-off modewhere all constituent elements are turned off. In the same manner, whenthe display device 200 is rotated in a horizontal direction, the displaydevice 200 may rotate the display 230 in a vertical direction throughthe rotation controller 245.

FIG. 17 is a view illustrating an overall operation of a display device200.

When receiving a sleep button signal in a power off state, the displaydevice 200 may change a mode to a sleep mode. When receiving a sleepbutton signal in a sleep mode once again or a button for anothercommand, as shown in (a) of FIG. 17, a screen of the display device 200may be changed to a screen displaying objects in a vertical direction.When receiving a home button signal, the display device 200 may displaya plurality of objects in a vertical direction as shown in (b) of FIG.17. When a content in a vertical direction is selected, the displaydevice 200 may return to the state as shown in (a) of FIG. 17, and whena content in a horizontal direction is selected, the display device 200may return to the state as shown in (c) of FIG. 17. In the same manner,when receiving a home button signal in the state as shown in (c) of FIG.17, the display device 200 may return to the state as shown in (d) ofFIG. 17.

FIG. 18 is a flowchart provided to explain an example embodiment.

Referring to FIG. 18, the display device 200 may display a plurality ofobjects on the display 230 at step S1810. When it is detected that apredetermined event occurs at step S1820-Y, the display device 200 mayrotate the display in the first direction by a predetermined angle, andas the display rotates in the first direction, the display device 200may rotate and display the constituent elements included in theplurality of objects in the second direction, which is a reversedirection to the first direction while maintaining the arrangement ofthe plurality of objects at step S1830. When the display device 200 doesnot detect a predetermined event at step S1820-N, the display device 200may maintain a state where a plurality of objects are displayed untilwhen a predetermined event is detected.

A device (e.g., modules or display device 200) or a method (e.g.,operations) in accordance with various embodiments may be performed byat least one computer (e.g., a processor) which executes a one or moreinstructions included in at least one program among programs maintainedby computer-readable storage media.

When the instructions are executed by a computer (e.g., a processor),the at least one computer may perform a function corresponding to theinstructions. In this case, the computer-readable storage medium may be,for example, the memory 250.

The program may be stored in a non-transitory computer readablerecording medium such as a hard disk, a floppy disk, a magnetic medium(e.g., a magnetic tape), an optical medium (e.g., a compact disc readonly memory (CD-ROM)), a digital versatile discs (a DVD),magneto-optical media (e.g., a floptical disk), a hardware device (e.g.,ROM, RAM, a flash memory, etc.). In this case, the storage medium may begenerally included as part of the configuration of the display device200, but it may be mounted through a port of the display device 200, orincluded in an external device outside the display device 200 (e.g., acloud, a server, or other electronic device). The program may be dividedinto a plurality of storage media, and at least part of a plurality ofstorage media may be located in the external device of the displaydevice 200.

The one or more instructions may include high-level language code thatmay be executed by a computer using an interpreter or the like as wellas machine language code such as those generated by a compiler. Thehardware devices described above may be configured to operate as one ormore software modules to perform the operations of the variousembodiments, and vice versa.

Although embodiments have been shown and described, it will beappreciated by those skilled in the art that changes may be made tothese embodiments without departing from the principles and spirit ofthe present disclosure. Accordingly, the scope of the present disclosureis not limited to the described embodiments, but is defined by theappended claims as well as their equivalents.

What is claimed is:
 1. A method of displaying a content of a displaydevice including a rotatable display, the method comprising: displayinga plurality of objects and a plurality of elements positioned in each ofthe plurality of objects on the rotatable display; based on an eventoccurring, rotating the rotatable display in a first direction by apredetermined angle; based on the rotatable display being rotated in thefirst direction, rotating the plurality of elements positioned in eachof the plurality of objects at a rotation speed of the rotatable displayin a second direction which is opposite to the first direction,independently from the plurality of objects; and based on an object ofthe plurality of objects being selected, highlighting the object androtating only an element positioned in the highlighted object whilemaintaining an orientation of the plurality of objects comprising thehighlighted object and elements positioned in each remaining object ofthe plurality of objects.
 2. The method as claimed in claim 1, whereinthe rotating the plurality of elements in the second direction comprisesrotating the plurality of elements while maintaining an arrangement ofthe plurality of objects.
 3. The method as claimed in claim 2, whereinthe rotating comprises, based on the rotatable display being rotated inthe first direction, while maintaining an opacity of the plurality ofobjects, fading out the plurality of elements respectively positioned ineach of the plurality of objects, and fading in a new element to atleast one object of the plurality of objects.
 4. The method as claimedin claim 2, wherein the displaying comprises: displaying a first screenwith respect to the selected object; based on the event occurring whilethe first screen is displayed, rotating the rotatable display in thefirst direction by the predetermined angle; and based on the rotatabledisplay being rotated in the first direction, fading out the firstscreen and fading in a second screen with respect to the selectedobject.
 5. The method as claimed in claim 4, wherein the displayingcomprises fading out display of the first screen while rotating in thesecond direction, and fading in display of the second screen whilerotating in the second direction.
 6. The method as claimed in claim 4,further comprising, based on the selected object being a music relatedcontent, outputting audio related to the music related content, whereinone of the first screen and the second screen includes at least one ofan album cover, an artist picture and lyrics associated with the musicrelated content, and wherein another one of the first screen and thesecond screen includes an image content associated with the musicrelated content.
 7. The method as claimed in claim 2, furthercomprising, based on a user input not being sensed during apredetermined period of time while the plurality of objects are rotatedand displayed in the first direction, rotating the rotatable display inthe second direction, and changing a mode of the display device to asleep mode.
 8. The method as claimed in claim 1, wherein the rotatingcomprises rotating the rotatable display 90 degrees.
 9. A display devicecomprising: a display; a rotation controller; and a processor configuredto: control the display to display a plurality of objects and aplurality of elements positioned in each of the plurality of objects;based on an event occurring, rotate the display in a first direction bya predetermined angle through the rotation controller; and based on thedisplay being rotated in the first direction, control the display torotate the plurality of elements positioned in each of the plurality ofobjects at a rotation speed of the display in a second direction whichis opposite to the first direction, independently from the plurality ofobjects, wherein the processor, based on an object of the plurality ofobjects being selected, is further configured to highlight the objectand rotate only an element positioned in the highlighted object whilemaintaining an orientation of the plurality of objects comprising thehighlighted object and elements positioned in each remaining object ofthe plurality of objects.
 10. The display device as claimed in claim 9,wherein the processor is further configured to: control the display torotate the plurality of elements in the second direction whilemaintaining an arrangement of the plurality of objects.
 11. The displaydevice as claimed in claim 10, wherein the processor is furtherconfigured to, based on the display being rotated in the firstdirection, while maintaining an opacity of the plurality of objects,control the display to fade out the plurality of elements respectivelypositioned in each of the plurality of objects, and fade in a newelement to at least one object of the plurality of objects.
 12. Thedisplay device as claimed in claim 10, wherein the processor is furtherconfigured to: control the display to display a first screen withrespect to the selected object; based on the event occurring while thefirst screen is displayed, control the rotation controller to rotate thedisplay in the first direction by the predetermined angle; and based onthe display being rotated in the first direction, control the display tofade out display of the first screen and fade in display of a secondscreen with respect to the selected object.
 13. The display device asclaimed in claim 12, wherein the processor is further configured to,based on the display being rotated in the first direction, display thedisplay so that display of the first screen fades out while rotating inthe second direction, and display of the second screen fades in whilerotating in the second direction.
 14. The display device as claimed inclaim 12, further comprising a speaker, wherein the processor is furtherconfigured to, based on the selected object being a music relatedcontent, control the speaker to output audio related to the musicrelated content, wherein one of the first screen and the second screenincludes at least one of an album cover, an artist picture and lyricsassociated with the music related content, and wherein another one ofthe first screen and the second screen includes an image contentassociated with the music related content.
 15. The display device asclaimed in claim 10, wherein the processor is further configured to,based on a user input not being sensed during a predetermined period oftime while the plurality of objects are rotated and displayed in thefirst direction, control the rotation controller to rotate the displayin the second direction, and control to change a mode of the displaydevice to a sleep mode.
 16. The display device as claimed in claim 9,wherein the processor is further configured to control the rotationcontroller to rotate the display 90 degrees.